Method of operation
In defining the strategy for a test level, the choice is made about the test types and thoroughness of testing, i.e.
the extent to which the combinations of characteristics and object parts are tested. This is dependent on the risk
estimate from the PRA, or rather the degree to which the client wishes to cover these risks, and how much time/money he
allocates for it.
To this end, the test manager makes a proposal for each combination of object part/characteristic in respect of the
required test types and depth of testing.
Test types
In this, the test manager specifies what is to be tested out of a particular object part-combination. At its
simplest, this is the test of a quality characteristic, e.g. a functionality test or performance test, but often it is
possible, and necessary, to provide more insight. Other test types are associated with the quality characteristic
functionality, e.g. the multi-user test, regression test or chain test.
Testing depth
As regards the depth of testing, a choice is made from the following possibilities:
●●● Thorough dynamic testing
●● Average dynamic testing
● Light dynamic testing
S Static testing: Checking and inspecting products without software being run
I Implicit testing: Testing in conjunction with another test type without making explicit
test cases; only observable defects are documented.
− If there is nothing in a cell, this means that the relevant evaluation or test level can
ignore the characteristic.
An initial setup of the strategy is often possible in the PRA session or the PRA, and these steps of the Strategy
definition can be combined. If this doesn’t work, then the test manager makes a proposal.
A point to note is that when the MTP indicates a thoroughness of ●●● for a particular test level (e.g. ST) or a
particular combination of characteristic/object part, this doesn’t mean that, in the ST, the entire system, or the
combination of characteristic/object part, should be tested in the greatest possible coverage, but that testing is
required in greater depth than average. This should also be evident from the MTP notes.
Products
The test strategy, established in the test plan, with a brief description of the planned test types and an
indication of the importance per characteristic/object part.
Techniques
Strategy determination (as described above).
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